JPH04116270A - Ignition coil-integrated distributor for internal combustion engine - Google Patents
Ignition coil-integrated distributor for internal combustion engineInfo
- Publication number
- JPH04116270A JPH04116270A JP23553790A JP23553790A JPH04116270A JP H04116270 A JPH04116270 A JP H04116270A JP 23553790 A JP23553790 A JP 23553790A JP 23553790 A JP23553790 A JP 23553790A JP H04116270 A JPH04116270 A JP H04116270A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- ignition coil
- ignition
- shielding plate
- magnetic flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 230000004907 flux Effects 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
- 230000005284 excitation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内燃機関用点火コイル一体形配電器に係り、
特にその信頼性の向上に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an ignition coil integrated power distribution device for an internal combustion engine,
Especially regarding improving its reliability.
一内燃機関用点火システムの小形化・取付作業性の向上
及び構成部品相互間の電気的接続部の信頼性向上に対す
る要求によって、配電器に点火コイルを一体化するもの
が知られている。（例、米国特許第３８８８２２５号）
点火コイルを配電器に一体化する場合の問題のひとつと
して、点火コイルの漏洩磁束が、配電器内に内蔵された
回転信号検出装置に悪影響を及ぼすという問題があり、
従来より種々の対策方式が知られている。例えば、特開
昭５９−６５５７１号のように、円筒状の遮閉板を配電
器ハウジングに固定し連間空間を作り、その中にシグナ
ルロータ、電磁ピックアップを収納する方式や特公昭６
〇−１８８３４号のように点火コイルと電磁ピックアッ
プの相対位置を適当に設定することによって点火コイル
の漏洩磁束の方向を電磁ピックアップに悪影響の少ない
方向に制限する方法が知られている。2. Description of the Related Art In response to demands for miniaturization of ignition systems for internal combustion engines, improved installation workability, and improved reliability of electrical connections between component parts, it is known that an ignition coil is integrated into a power distributor. (For example, U.S. Pat. No. 3,888,225) One of the problems when integrating an ignition coil into a power distribution device is that leakage magnetic flux from the ignition coil has an adverse effect on the rotation signal detection device built into the power distribution device. can be,
Various countermeasure methods have been known in the past. For example, as in Japanese Patent Application Laid-Open No. 59-65571, a cylindrical shielding plate is fixed to the distributor housing to create an interspace, and a signal rotor and an electromagnetic pickup are housed in the space.
There is a known method, as disclosed in No. 0-18834, in which the direction of the leakage magnetic flux of the ignition coil is limited to a direction that has less adverse effects on the electromagnetic pickup by appropriately setting the relative positions of the ignition coil and the electromagnetic pickup.
上記従来技術の前者のものは、配電器の小形。 The former of the above-mentioned prior art uses a small power distributor.
軽量化について配慮がされておらず、遮閉板及びその固
定用部品等が必要なため、部品数の増加。No consideration was given to reducing weight, and the number of parts increased because shielding plates and parts for fixing them were required.
重量の増大、配電器が大形化する問題があった。There were problems with the increase in weight and the size of the power distributor.
また、上記従来技術の後者のものは、配電器内部品の配
置に制限があるため、配電器の外形形状に制限があり小
形化に問題があった。Further, in the latter of the above-mentioned conventional techniques, there is a restriction on the arrangement of internal parts of the power distributor, so there is a restriction on the external shape of the power distributor, and there is a problem in downsizing.
本発明の目的は、上記のような問題のない即ち、配電器
の外形形状に制限のない、小形軽量でしかも電磁ピック
アップへの点火コイル漏洩磁束の影響を防止するのに有
効な方式を提供することにある。An object of the present invention is to provide a method that does not have the above-mentioned problems, that is, has no restrictions on the external shape of the power distributor, is small and lightweight, and is effective in preventing the influence of ignition coil leakage magnetic flux on the electromagnetic pickup. There is a particular thing.
また、前者、後者のものは点火コイルの発熱に伴う温度
上昇が高いことについて放熱の工夫がなされていなかっ
た。Furthermore, in the former and latter, no measures were taken to dissipate heat due to the high temperature rise caused by the heat generated by the ignition coil.
本発明の目的は、上記に対し放熱しやすい構造を提供す
ることにある。An object of the present invention is to provide a structure that facilitates heat dissipation.
〔課題を解決するための手段〕 上記目的は下記の構成で達成される。[Means to solve the problem] The above objective is achieved with the following configuration.
即ち、機関の回転に同期して回転するシャフト、該シャ
フトに取り付けられ該シャフトと一体に回転するシグナ
ルロータ、該シグナルロータの回転に伴う磁束の変化を
検知して信号を発生する電磁ピックアップを有する点火
コイル一体形配電器において、点火コイル巻線の開口部
近傍でかつコイル巻線の中心軸に略垂直な面上にしかも
点火コイルに接触させて、磁性体からなる遮閉板を点火
コイルに共締めしハウジングに取り付けることによって
達成される。That is, it has a shaft that rotates in synchronization with the rotation of the engine, a signal rotor that is attached to the shaft and rotates integrally with the shaft, and an electromagnetic pickup that generates a signal by detecting changes in magnetic flux accompanying the rotation of the signal rotor. In the ignition coil integrated power distribution device, a shielding plate made of a magnetic material is attached to the ignition coil near the opening of the ignition coil winding, on a plane substantially perpendicular to the central axis of the coil winding, and in contact with the ignition coil. This is accomplished by co-tightening and attaching it to the housing.
さらに、上記遮閉板をハウジングに接触させることによ
り、点火コイルの発熱を効率よく放熱できる。Furthermore, by bringing the shielding plate into contact with the housing, the heat generated by the ignition coil can be efficiently radiated.
第３図（ａ）は電磁ピックアップコイルの一般的な出力
波形で、同図（ｂ）は点火コイルの一次側電流の波形で
ある。点火コイルの一次側電流の遮断時に（ａ）に示す
ように、点火コイルから磁束が漏洩し電磁ピックアップ
は第３図（ａ）で（イ）のようなノイズを検出してしま
う。そのため、図中（ロ）のように−次電流制御回路が
動作してしまい、異常点火が起こる。このような問題に
対し、第４図に示すように点火コイル７の巻線開口部近
傍でかつコイル巻線の中心軸に略垂直な面上に磁性体の
遮閉板を配置することによって、漏洩磁束がコイル開口
部からはなれるにしたがって広い範囲に広がりピックア
ップへの影響をあたえるのを開口部付近の上記遮閉板で
磁束の方向を変化させることができピックアップ４への
影響を防止できる。また、磁性体の遮閉板１００は鋼板
などで容易に形成でき、充分な効果が得られる。FIG. 3(a) shows a general output waveform of an electromagnetic pickup coil, and FIG. 3(b) shows a waveform of a primary current of an ignition coil. When the primary current of the ignition coil is cut off, magnetic flux leaks from the ignition coil as shown in (a), and the electromagnetic pickup detects noise as shown in (a) in FIG. 3(a). As a result, the secondary current control circuit operates as shown in (b) in the figure, causing abnormal ignition. To solve this problem, as shown in FIG. 4, by arranging a magnetic shielding plate near the winding opening of the ignition coil 7 and on a plane substantially perpendicular to the central axis of the coil winding, As the leakage magnetic flux leaves the coil opening, it spreads over a wide range and affects the pickup. However, the shielding plate near the opening can change the direction of the magnetic flux, thereby preventing the leakage magnetic flux from affecting the pickup 4. Further, the magnetic shielding plate 100 can be easily formed from a steel plate or the like, and sufficient effects can be obtained.
また、磁性体の遮閉板１００を放熱材として利用できる
効果がある。Further, there is an effect that the magnetic shielding plate 100 can be used as a heat dissipation material.
遮閉板１００を漏洩磁束が広い範囲に広がっていないコ
イル開口部に設けることによって、コイル全体をおおう
タイプなどにくらべて面積を小さくすることが可能でシ
ールド板の生産性及び配電器の小形軽量化に効果がある
。By providing the shielding plate 100 at the coil opening where the leakage magnetic flux does not spread over a wide area, the area can be made smaller compared to a type that covers the entire coil, improving the productivity of the shielding plate and making the power distributor smaller and lighter. It is effective for
以下、本発明の一実施例を第１項〜第５図により説明す
る。An embodiment of the present invention will be described below with reference to Sections 1 to 5.
第１図及び第２図において、シャフト１は機関の回転に
同期して回転し、ハウジング２に取り付けである。該シ
ャフト１には、シグナルロータ３が取り付けられ、該シ
ャフト１と一体に回転する。In FIGS. 1 and 2, a shaft 1 rotates in synchronization with the rotation of the engine and is attached to a housing 2. A signal rotor 3 is attached to the shaft 1 and rotates together with the shaft 1.
シグナルロータ３にはマグネット５を含む電磁ピックア
ップコイル４が対向しており、ピックアップコイル４に
印加される磁束の変化量を検知し、点火増幅器６は該ピ
ックアップコイル４の出力信号に応じて点火コイル７の
１次コイルへのバッテリーからの通電を制御する。An electromagnetic pickup coil 4 including a magnet 5 faces the signal rotor 3, detects the amount of change in magnetic flux applied to the pickup coil 4, and an ignition amplifier 6 adjusts the ignition coil according to the output signal of the pickup coil 4. Controls the supply of electricity from the battery to the primary coil of No. 7.
ピックアップコイル４の出力を第３図とすると点火コイ
ル７の１次側コイルに流れる電流は第３図（ｄ）の如く
制御され、１次コイルへの通電が遮断されると２次コイ
ルに高電圧が誘起される。If the output of the pickup coil 4 is shown in Figure 3, the current flowing to the primary coil of the ignition coil 7 is controlled as shown in Figure 3(d), and when the power to the primary coil is cut off, a high current flows to the secondary coil. A voltage is induced.
この高電圧はロータヘッド９及び配電キャップ１０に設
けられた電極１１を介して図示されない機関の各気筒の
点火プラグに印加される。This high voltage is applied to the spark plugs of each cylinder of the engine (not shown) via electrodes 11 provided on the rotor head 9 and the power distribution cap 10.
１００は磁性体からなる遮閉板で２００は遮閉板１００
及び点火コイル７をハウジング２に固定するための点火
コイル固定ネジである。遮閉板１００はピックアップコ
イル４と点火コイル７との間に位置し、ハウジング２に
点火コイル７と一緒にネジ２０’Ｏにより共締めする。100 is a shielding plate made of magnetic material, and 200 is a shielding plate 100.
and an ignition coil fixing screw for fixing the ignition coil 7 to the housing 2. The shielding plate 100 is located between the pickup coil 4 and the ignition coil 7, and is fastened together with the ignition coil 7 to the housing 2 with screws 20'O.
点火コイル７は鉄心７２からなる閉磁路型であるが、点
火コイル７の周囲に漏洩磁束が発生する。Although the ignition coil 7 is a closed magnetic circuit type composed of an iron core 72, leakage magnetic flux is generated around the ignition coil 7.
第５図（ａ）、（ｂ）に示すように上記漏洩磁束は遮閉
板１００によって、その磁束方向が制御され、電磁ピッ
クアップ４への影響が防止される。As shown in FIGS. 5(a) and 5(b), the direction of the leaked magnetic flux is controlled by the shielding plate 100, and the influence on the electromagnetic pickup 4 is prevented.
また、遮閉板１００をハウジング２に接触させることに
より、点火コイル７より発生した熱Ｈをハウジング２を
通し外部に放熱できる効果がある。Further, by bringing the shielding plate 100 into contact with the housing 2, there is an effect that the heat H generated by the ignition coil 7 can be radiated to the outside through the housing 2.
以上詳述したように、本発明によれば、点火コイルの漏
洩磁束の影響で点火誤動作などの不具合が発生しない。As described in detail above, according to the present invention, problems such as ignition malfunction do not occur due to the influence of leakage magnetic flux of the ignition coil.
しかも、配電器の形状２点火コイルの形状、配置、ピッ
クアップの配置になんら制限がないため小形軽量化に有
利な高信頼性の点火コイル一体形配電器を提供できる効
果がある。In addition, since there are no restrictions on the shape, arrangement, or pick-up arrangement of the ignition coil in shape 2 of the power distributor, it is possible to provide a highly reliable ignition coil-integrated power distributor that is advantageous in reducing size and weight.
また、周辺機器への漏洩磁束の悪影響を防止でき、内燃
機関、車両の信頼性向上に効果がある。In addition, it is possible to prevent the adverse effects of leakage magnetic flux on peripheral devices, which is effective in improving the reliability of internal combustion engines and vehicles.
また、遮閉板を放熱材として利用できるため熱効率の良
い点火コイル一体形配電器を提供できる効果がある。Furthermore, since the shielding plate can be used as a heat dissipation material, it is possible to provide an ignition coil-integrated power distribution device with good thermal efficiency.
第１図、第２図は本発明の一実施例を示す図、第３図は
主な信号波形図、第４図は本発明の要部説明図、第５図
は本発明の効果説明図である。
１・・・シャフト、２・・・ハウジング、３・・・シグ
ナルロータ、４・・・ピックアップコイル、６・・・点
火増幅器、７・・・点火コイル、１００・・・遮閉板、
２００・・点火′ｌＪ２図
ｉ７！Ｊ３図
第
図
第Ｓ図
（久）
ル）Fig. 1 and Fig. 2 are diagrams showing an embodiment of the present invention, Fig. 3 is a diagram of main signal waveforms, Fig. 4 is a diagram illustrating the main parts of the present invention, and Fig. 5 is a diagram illustrating the effects of the present invention. It is. DESCRIPTION OF SYMBOLS 1... Shaft, 2... Housing, 3... Signal rotor, 4... Pick-up coil, 6... Ignition amplifier, 7... Ignition coil, 100... Shielding plate,
200...Ignition 'lJ2 figure i7! Figure J3 Figure S (Ku)
Claims (1)
トに取り付けられ該シャフトと一体に回転するシグナル
ロータ、該シグナルロータの回転に伴なう磁束の変化を
検知して信号を発生する電磁ピックアップを有する点火
コイル一体形配電器において、点火コイル巻線の開口部
近傍でかつコイル巻線の中心軸に略垂直な面上に磁性体
からなる遮閉板を設置したことを特徴とする内燃機関用
点火コイル一体形配電器。 ２、請求項第１項において、遮閉板を点火コイルと共締
めしハウジングに接触させたことを特徴とする内燃機関
用点火コイル一体形配電器。[Claims] 1. A shaft that rotates in synchronization with the rotation of the engine, a signal rotor that is attached to the shaft and rotates integrally with the shaft, and a system that detects changes in magnetic flux accompanying the rotation of the signal rotor. In an ignition coil integrated power distributor having an electromagnetic pickup that generates a signal, a shielding plate made of a magnetic material is installed near the opening of the ignition coil winding and on a plane substantially perpendicular to the central axis of the coil winding. A power distributor with an integrated ignition coil for internal combustion engines. 2. The ignition coil-integrated power distribution device for an internal combustion engine according to claim 1, wherein the shielding plate is fastened together with the ignition coil and brought into contact with the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23553790A JPH04116270A (en) | 1990-09-07 | 1990-09-07 | Ignition coil-integrated distributor for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23553790A JPH04116270A (en) | 1990-09-07 | 1990-09-07 | Ignition coil-integrated distributor for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04116270A true JPH04116270A (en) | 1992-04-16 |
Family
ID=16987452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23553790A Pending JPH04116270A (en) | 1990-09-07 | 1990-09-07 | Ignition coil-integrated distributor for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04116270A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3184380A1 (en) | 2015-12-23 | 2017-06-28 | Honda Motor Co., Ltd. | Pedal apparatus |
| US20200039480A1 (en) * | 2018-07-31 | 2020-02-06 | Honda Motor Co., Ltd. | Brake pedal assembly and installation method |
-
1990
- 1990-09-07 JP JP23553790A patent/JPH04116270A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3184380A1 (en) | 2015-12-23 | 2017-06-28 | Honda Motor Co., Ltd. | Pedal apparatus |
| US20200039480A1 (en) * | 2018-07-31 | 2020-02-06 | Honda Motor Co., Ltd. | Brake pedal assembly and installation method |
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